测试下载序列数据出错

from tqsdk import *
from datetime import date
import time
api = TqApi(auth=TqAuth("********", "********"))
 tick_data = api.get_tick_data_series(symbol = "CZCE.SA209",start_dt = datetime(2022, 4, 19, 0, 0, 0), end_dt = datetime(2022, 4, 19, 15, 0, 0))
print(tick_data)
 ma = MA(tick_data, 30)  # 计算 MA 指标
print(list(ma["ma"]))
 api.close()

有申请过专业版试用了

错误提示:

tick_data = api.get_tick_data_series(symbol = “CZCE.SA209”,start_dt = datetime(2022, 4, 19, 0, 0, 0), end_dt = datetime(2022, 4, 19, 15, 0, 0))
TypeError: ‘module’ object is not callable